A device to be used in photography for achieving a dominant color effect. Thus the device can be attached to the objective of any camera. It has a tubular enclosure open at both ends and is carrying at one end a fastener for releasably fastening the enclosure to an objective. Adjacent its other end the enclosure has a means for supporting a special color filter. Between the color filter and the objective is an illuminating structure for illuminating the color filter so as to achieve the dominant color effect. Between the illuminating structure and the objective is a shielding structure to prevent the light from the light source from travelling back to the objective, so that in this way the light is primarily directed toward the filter.